Adena boils tomato soup to kill all of the bacteria in it. She pours the hot soup into four groups of four small bowls that are just out of the dishwasher. The table shows what she does with each group of samples. She is going to observe what grows on each sample. Which is the control sample in this experiment? Group 1 cover right away Group 2 leave it open to the air for 1 hour and then cover Group 3 touch with a finger and then cover Group 4 touch with tongue and then cover Question 6 options: Group 4 Group 2 Group 3 Group 1